feat: Implement core multiplayer lobby system with room management, player profiles, and game settings.

scripts/ui/profile_panel.gd

@@ -40,6 +40,7 @@ func _load_profile_data() -> void:
 	
 	# Display name
 	display_name_input.text = profile.get("display_name", "Guest")
+	display_name_input.max_length = 6
 	
 	# Avatar
 	var avatar_url: String = UserProfileManager.get_avatar_url()
@@ -132,9 +133,13 @@ func _on_save_name_pressed() -> void:
 	save_name_btn.disabled = false
 	
 	if success:
+		status_label.add_theme_color_override("font_color", Color.GREEN)
 		status_label.text = "Name updated!"
 		emit_signal("profile_updated")
+		await get_tree().create_timer(3.0).timeout
+		status_label.text = ""
 	else:
+		status_label.add_theme_color_override("font_color", Color.RED)
 		status_label.text = "Failed to update name"
 
 func _on_link_account_pressed() -> void:
@@ -187,7 +192,10 @@ func _on_profile_updated() -> void:
 	_load_profile_data()
 
 func _on_profile_update_failed(error: String) -> void:
+	status_label.add_theme_color_override("font_color", Color.RED)
 	status_label.text = error
+	await get_tree().create_timer(3.0).timeout
+	status_label.text = ""
 
 func show_panel() -> void:
 	_load_profile_data()